tert-butyl 2-[4-(1-{1-[N-({N-[1-(N-{(2R)-2-[(5-methylindolyl)methyl]-4-enyl}carbamoyl)-(1S)-2-carbamoylethyl]carbamoyl}cyclohexyl)carbamoyl]-(1S)-2-[(tert-butyl)oxycarbonyl]ethyl}-(1S)-prop-2-enyl)phenyl]propane-1,3-dioate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以81%的产率得到di-tert-butyl 2-[4-((9S,10S,18S,14R)-7,16,19-triaza-9-{[(tert-butyl)oxycarbonyl]methyl}-18-(carbamoylmethyl)-14-[(5-methylindolyl)methyl]-8,17,20-trioxospiro[5.14]icos-11-en-10-yl)phenyl]propane-1,3-dioate